5209345 has 4 divisors (see below), whose sum is σ = 6251220. Its totient is φ = 4167472.

The previous prime is 5209319. The next prime is 5209381. The reversal of 5209345 is 5439025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 853776 + 4355569 = 924^2 + 2087^2 .

It is a cyclic number.

It is not a de Polignac number, because 5209345 - 2⁵ = 5209313 is a prime.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520930 + ... + 520939.

It is an arithmetic number, because the mean of its divisors is an integer number (1562805).

Almost surely, 2^5209345 is an apocalyptic number.

It is an amenable number.

5209345 is a deficient number, since it is larger than the sum of its proper divisors (1041875).

5209345 is a wasteful number, since it uses less digits than its factorization.

5209345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041874.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 5209345 is about 2282.3989572378. The cubic root of 5209345 is about 173.3515410689.

The spelling of 5209345 in words is "five million, two hundred nine thousand, three hundred forty-five".